HBO is ready to give Roy Cohn his Hollywood closeup. The infamous lawyer who became a mentor to Donald Trump is the subject of a new documentary set to premiere on the network early next year.

The still-untitled project features recently discovered audiotapes of candid discussions between Cohn and journalist Peter Manso, recorded at the height of Cohn’s career as a power broker in the rough-and-tumble world of New York City business and politics.

The film will be directed by Ivy Meeropol (HBO’s “Heir to an Execution”), granddaughter of Julius and Ethel Rosenberg, who spent much of her life feeling both repelled and fascinated by the man who prosecuted the Rosenbergs in what became known as the “atomic spies” case. Cohn successfully prosecuted the couple in federal court and then insisted that they be executed, which they were in 1953.

Cohn died in 1986, less than two months after being disbarred for unethical conduct.